EN ISO 22476-1:2023/prA1

SLOVENSKI STANDARD
SIST EN ISO 22476-1:2023/oprA1:2026
01-marec-2026
Geotehnično preiskovanje in preskušanje - Preskušanje na terenu - 1. del:
Konusni penetracijski preizkus z ali brez merjenja pornih tlakov - Dopolnilo 1 (ISO
22476 1:2022/DAM 1:2026)
Geotechnical investigation and testing - Field testing - Part 1: Electrical cone and
piezocone penetration test - Amendment 1 (ISO 22476 1:2022/DAM 1:2026)
Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 1:
Drucksondierungen mit elektrischen Messwertaufnehmern und Messeinrichtungen für
den Porenwasserdruck - Änderung 1 (ISO 22476 1:2022/DAM 1:2026)
Reconnaissance et essais géotechniques - Essais en place - Partie 1: Essais de
pénétration au cône électrique et au piézocône - Amendement 1 (ISO 22476
1:2022/DAM 1:2026)
Ta slovenski standard je istoveten z: EN ISO 22476-1:2023/prA1
ICS:
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
SIST EN ISO 22476-1:2023/oprA1:2026 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

SIST EN ISO 22476-1:2023/oprA1:2026

SIST EN ISO 22476-1:2023/oprA1:2026
DRAFT
Amendment
ISO 22476-1:2022/
DAM 1
ISO/TC 182
Geotechnical investigation and
Secretariat: BSI
testing — Field testing —
Voting begins on:
Part 1:
2026-01-16
Electrical cone and piezocone
Voting terminates on:
penetration test 2026-04-10
AMENDMENT 1
Reconnaissance et essais géotechniques — Essais en place —
Partie 1: Essais de pénétration au cône électrique et au piézocône
AMENDEMENT 1
ICS: 93.020
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO 22476-1:2022/DAM 1:2026(en)

SIST EN ISO 22476-1:2023/oprA1:2026
DRAFT
ISO 22476-1:2022/DAM 1:2026(en)
Amendment
ISO 22476-1:2022/
DAM 1
ISO/TC 182
Geotechnical investigation and
Secretariat: BSI
testing — Field testing —
Voting begins on:
Part 1:
Electrical cone and piezocone
Voting terminates on:
penetration test
AMENDMENT 1
Reconnaissance et essais géotechniques — Essais en place —
Partie 1: Essais de pénétration au cône électrique et au piézocône
AMENDEMENT 1
ICS: 93.020
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO 22476-1:2022/DAM 1:2026(en)

ii
SIST EN ISO 22476-1:2023/oprA1:2026
ISO 22476-1:2022/DAM 1:2026(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent
rights identified during the development of the document will be in the Introduction and/or on the ISO list
of patent declarations received (see www.iso.org/patents).Amendment 1 to ISO 18674-3:2017 was prepared
by Technical Committee ISO/TC 182, Geotechnics.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 182, Geotechnics, in collaboration with
the European Committee for Standardization (CEN) Technical Committee CEN/TC 341, Geotechnical
Investigation and Testing, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This amendment ISO22476-1:2022/Amd.1:2026(E) has been prepared to draw attention to known errors
and ambiguities in normative requirements found to date (October 2025), for the following topics:
Cone penetrometer geometry;
Cone penetrometer calibration and verification.
A list of all parts in the ISO 22476 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iii
SIST EN ISO 22476-1:2023/oprA1:2026

SIST EN ISO 22476-1:2023/oprA1:2026
ISO 22476-1:2022/DAM 1:2026(en)
Geotechnical investigation and testing — Field testing —
Part 1:
Electrical cone and piezocone penetration test
AMENDMENT 1
4.2  Cone penetrometer
Replace
“The cone penetrometer shall have internal load sensors for the measurement of force on the cone (cone
resistance), side friction on the friction sleeve (sleeve friction) and, if applicable, pore pressure at one or several
locations on the surface of the cone penetrometer.”
With
“The cone penetrometer shall have internal load sensors for the measurement of force on the cone (cone
resistance), side friction on the friction sleeve (sleeve friction) and, if applicable, a sensor for pore pressure
at one or several locations on the surface of the cone penetrometer.”
4.4  Cone
Replace
“The cross-sectional area of the cone shall be 1 000 mm2, which corresponds to a diameter of 35,7 mm”
With
“The nominal cross-sectional projected area of the cone shall be 1 000 mm , which corresponds to a nominal
diameter of 35,7 mm”
Replace
” In this case, the geometry of the cone shall be adjusted proportionally to the diameter.”
With
” In this case, the dimensional tolerances given for a cone with nominal A =1 000 mm shall be linearly
c
scaled in proportion to the nominal diameter.”
Delete
“If a filter is put at position u , the diameter of the filter element itself shall be equal to the diameter of the
cone, d , with a tolerance of -0,1 mm to 0 mm (see also 4.5 and 4.6).”
c
4.5  Friction sleeve
Replace
”The surface area, As, shall be 15 000 mm2
With
SIST EN ISO 22476-1:2023/oprA1:2026
ISO 22476-1:2022/DAM 1:2026(en)
2 2
“The surface area of the sleeve friction shall be 15 000 mm for a cone with nominal A =1 000 mm , which
c
corresponds to d =35,7 mm.”
c
Replace
“ The geometry and tolerances of the friction sleeve shall be within the tolerance requirement, as shown in
Figure 5.”
With
“ For a cone penetrometer with nominal surface area A =1 000 mm , the geometry and dimensional
c
tolerances of the friction sleeve shall be within the requirements given below.”
Replace
",132 5 mm <≤lm135,"0 m
s
With
",132 5 mm ≤≤lm135,"0 m
s
Replace
The cross-sectional area of the top end of the friction sleeve shall not be smaller than the cross-sectional area of
the lower end.
With
The cross-sectional area of the top the friction sleeve (A ) shall not be smaller than the cross-sectional area
st
of the bottom of the friction sleeve (A ).
sb
4.6.2  Pore pressure u1
Replace
“The surface of the filter shall fit the shape of the cone: it shall not protrude and shall not recess more than
0,1 mm.”
With
“At the start of the test, the surface of the filter shall fit the shape of the cone:
— shall not protrude from the shape of the cone.
— shall not recess more than 0,6 mm.”
4.6.3  Pore pressure u2
Replace
“The filter element shall be placed in or just behind the cylindrical part of the cone. The diameter of the filter at
the start of the test shall be equal to the diameter of the cylindrical part of the cone and the friction sleeve, with
a tolerance limit of −0,1 mm to 0 mm.”
With
“The filter element shall be placed in the cylindrical part of the cone. The cylindrical part of the cone excludes
the gap between the cone and the filter element. The diameter of the filter element d at the start of the test
fil
shall be as follows:”.
SIST EN ISO 22476-1:2023/oprA1:2026
ISO 22476-1:2022/DAM 1:2026(en)
Replace
“(d − 0,1) ≤ d ≤ d “
2 fil c
With
” (d − 0,6) ≤ d ≤ d
c;min fil c
where d is the minimum allowable diameter of the cone.
c;min
NOTE The value of d is 35,3 mm for a cone with a nominal diameter of 35,7 mm, see Figure 4.”
c;min
4.6.4  Pore pressure u3
Replace
“The diameter of the filter shall correspond to the diameter of the friction sleeve with a tolerance limit of −0,1 mm
to 0 mm, i.e. the diameter of the filter shall be smaller or equal to the diameter of the friction sleeve:”
With
“The diameter of the filter element d at the start of the test shall be as follows:”.
fil
Replace
“(d − 0,1) ≤ d ≤ d “
2 fil 2
With
” (d − 0,6) ≤ d ≤ d
2;min fil 2
where d is the minimum allowable diameter of the friction sleeve.”
2min
5.1.2   Calibration and verification requirements
Replace
“Calibration shall be carried
...